/*版心*/
.w {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
}
/*头部 导航栏目*/
header {
    width: 100%;
    height: 100px;
    line-height: 100px;
}
header .logo {
    width: 221px;
    height: 52px;
}
header .nav {
    float: right;
}
header .nav .nav-item {
    position: relative;
    display: inline-block;
    width: 40px;
    margin-left: 60px;
    line-height: 14px;
}
header .nav-item a {
    display: block;
    width: 100%;
    height: 100%;
    font-size: 14px;
}
header .nav-item a:hover {
    font-size: 18px;
}

header .nav-item span {
    position: absolute;
    left: 50%;
    top: 20px;
    width: 20px;
    height: 1px;
    background-color: #668aca;
    transform: translateX(-50%);
    opacity: 0;
}
header .nav-item:hover span {
    opacity: 1;
}

/*网页底部*/
footer {
    width: 100%;
    height: 262px;
    background-color: #f7f7f7;
}
footer .foot {
    float: left;
    width: 400px;
    height: 74px;
    margin-top: 100px;
}
footer .foot:nth-child(2) {
    border: 1px solid #e9e9e9;
    border-top: 0;
    border-bottom: 0;
}
footer .foot p {
    font-size: 14px;
    color: #767676;
    line-height: 14px;
    margin-bottom: 16px;
    margin-left: 60px;
}
footer .foot p img {
    margin-right: 19px;
}